The Smithsonian Institution
The Academy of Natural Sciences
The Allegheny Portage Railway and Juniata Canal
The African American Museum of Philadelphia
The Arkansas Museum of Discovery
The Delaware Museum of Natural History
The Einstein Planetarium
The Fels Planetarium
The Franklin Institute Science Museum
The Hershey Museum
The Jacksonville Zoo
The James Michener Art Museum
The Morris Arboretum
The New Jersey State Aquarium
The Philadelphia Zoo
The Stroud Water Center
The University of Pennsylvania Museum of Archaeology and Anthropology

National Science Foundation
The National Geographic Society
The University of Pennsylvania
Scholastic, Inc.
Time, Inc.
SmithKline Beecham (now GSK)
Lucent Technologies
AT&T
Disney/Discovery 
KJ Productions (video)
Metro Newspaper (columnist)
St. Joseph's University
Hahnemann University
HealthInk and Vitality (consumer health)
SBK Pictures (IMAX)
WHYY TV/Radio (NPR)
Southeastern Pennsylvania Consortium for Higher Education